While the human visual system achieve large receptive fields within a handful of layers, CNNs need many more [1]}.
A neuron of the visual system connects not only to other neurons responding to similar spatial locations, but also to neurons at distant locations, provided that they share similar visual features, such as edge orientation (see Fig.REF a).
These connections not only enlarge the receptive fields, but they also facilitate solving tasks that require long-range integration of features.
For example, they allow tracking curved contours (Fig.REF b).
